Cohorts of 3-6 patients receive escalating doses of MOAB Hu1D10 until the MTD is determined. The MTD is defined as the dose preceding that at which 2 of 6 patients experience dose-limiting toxicity (DLT). If no DLT is observed, the biological effective dose (BED) is determined in the above cohorts. The BED is defined as the dose at which at least 4 of 6 patients experience an acceptable minimum trough level and clinical response. An additional 24 patients (12 per stratum) are treated at the MTD.